Weought-ibon wheel foe carriages



J. D/IGGOVLLUM.

Carriage-Wheel.

No. 3,578'.l

Patented .May A10, 1844 Nl PETERS, FHNW-Ll'HBGRAPNERv WASHINGTON. D, C4

y tree.

UNITED sTATEs PATENT oEEIcE.

JAMES MCCOLLUM, OF WILSONVILLE, ALABAMA.

n WRoUeHT-IEON WHEEL Eon CARRIAGES.

Specification of Letters Patent No. 3,578, dated May 10, 1844.

To all whom it may concern.-

Be it known that I, JAMES McCoLLUM, of lNilsonville, in the county of Shelby` and State of Alabama, have invented certain new and useful Improvements in Wrought Iron Carriage-Wheels; and I do hereby declare that the following is a full, clear,` and exact description of the constructionand operation of the same, reference being had to the annexed drawings, making a part of this specification, in whichy Figure l is an isometrical projection of the improved wheel, and Fig. 2 a geometrical. Vertical section `through the center of the same. y p i Construction-Vfith the exception of the boxes B, B, which are of steel, the whole wheel is constructed of wrought-iron. The hub H is formed of two pieces, the `middle part of each of which is bent into a semiQ` cylindrical shape of the required size, `the two ends of each remaining straight `for the purpose 'of being afterward welded toy gether, in such a manner as to form one piece, the center part of which,` being a hollow cylinder, constituteswthedhub proper and receives at each end the box B, which boxes are welded to its inner i surface. The straight partsof the hub, being welded together, projecttrom it, one on eachside, for the purposeof receiving the rivets r, r,

whichattach the spokes S, S, S, S, to the hub and to each `other,--urthermorel for the purpose oi' strengthening thewhole fabric at that particular point-The outer end of the hub is surroundedby aband of iron @,which protects the extremity of `the axle- This band of iron may be closed at its outer end, so` as to form a cap. The

spokes S, S, S, S, are four in number, comembraces on one side. Being fastened to i thehub, by means of the rivets 1, r, as above mentioned, the ends are bent up or downward as the case may be) in such a man:

` nerand at such an angle as to meet the rim R- at four equi-distantpoints. The spokes are fastened to the rim by a shoulder and rivets or bolt and screws. surrounded by' a broad tire T, which is astenedto it by a sul'icient number of bolts and screws, short pieces of iron are for thatl provements consist in the construction of the hub and spokes. It may however here be remarked, that, although only four spokes are employed, the wheel, if properly constructed, willbe .stronger than any other wheel `in common use.

even `lighter than `any ordinary wooden wheel of equal diameter.

`WhatI claim as 1nyinvention,and desire to secure by Letters Patent, is

The above described mode of uniting the hub `and the spokes, by making the latter Aembrace the former, instead of being inserted as heretofore done, by which arrangement the construction between the hub and the rim of the wheel is stronger, and the hub is less lia-ble to bend out of the central line.

JAMEs MGGoLLUM."

W'itnesses Brenn. I. YOUNG, FRANCIS BENNE.

The rim B is` e Furthermore it is believed that, although stronger, it will be 

